Matrix PKU 2155】的更多相关文章

问题描述 给定N * N矩阵A,其元素为0或1.A [i,j]表示第i行和第j列中的数字.最初我们有A [i,j] = 0(1 <= i,j <= N). 我们可以通过以下方式更改矩阵.给定一个左上角为(x1,y1)且右下角为(x2,y2)的矩形,我们使用“not”操作更改矩形中的所有元素(如果是'0'则更改它变为'1'否则将其变为'0').要维护矩阵的信息,系统会要求您编写程序以接收和执行两种指令. 1. C x1 y1 x2 y2(1 <= x1 <= x2 <= n,1…
题目大意:原题链接 题意很简单,就不赘诉了. 解题思路: 使用二维树状数组,很裸的题. 二维的写起来也很方便,两重循环. Add(int x,int y,int val)表示(x,y)-(n,n)矩形区域被修改val次(在传入参数时val=1) 如果是要修改(x1,y1)-(x2,y2)的矩形区域. 那么可以在(x1,y1)处加1,在(x2+1,y1)处加1,在(x1,y2+1)处加1,在(x2+1,y2+1)处加1,那么总共: (x1,y1)-(x2,y2)矩形区域被修改1次,(x2+1,y1…
Matrix Time Limit: 3000ms Memory Limit: 65536KB This problem will be judged on PKU. Original ID: 215564-bit integer IO format: %lld      Java class name: Main   Given an N*N matrix A, whose elements are either 0 or 1. A[i, j] means the number in the…
http://poj.org/problem?id=2155 Matrix Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 18143   Accepted: 6813 Description Given an N*N matrix A, whose elements are either 0 or 1. A[i, j] means the number in the i-th row and j-th column. I…
题目链接[http://poj.org/problem?id=2155] /* poj 2155 Matrix 题意:矩阵加减,单点求和 二维线段树,矩阵加减,单点求和. */ using namespace std; const int INF = 0x3f3f3f3f; ; int N, Q; struct Nodey { int l, r; int val; }; int locx[MAXN], locy[MAXN]; struct Nodex { int l, r; Nodey sty[…
题目链接:http://poj.org/problem?id=2155 Matrix Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 32950   Accepted: 11943 Description Given an N*N matrix A, whose elements are either 0 or 1. A[i, j] means the number in the i-th row and j-th col…
二维树状数组....                          Matrix Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 15575   Accepted: 5854 Description Given an N*N matrix A, whose elements are either 0 or 1. A[i, j] means the number in the i-th row and j-th colu…
Matrix Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 17880   Accepted: 6709 Description Given an N*N matrix A, whose elements are either 0 or 1. A[i, j] means the number in the i-th row and j-th column. Initially we have A[i, j] = 0 (1…
Matrix Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 17226   Accepted: 6461 Description Given an N*N matrix A, whose elements are either 0 or 1. A[i, j] means the number in the i-th row and j-th column. Initially we have A[i, j] = 0 (1…
Matrix Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 17224   Accepted: 6460 Description Given an N*N matrix A, whose elements are either 0 or 1. A[i, j] means the number in the i-th row and j-th column. Initially we have A[i, j] = 0 (1…